Ultrawide Bandgap Organic–Inorganic Hybrid Perovskite [C <sub>6</sub> N <sub>2</sub> H <sub>18</sub> ][CdCl <sub>4</sub> ] for Solar-Blind Ultraviolet Detection
Solar-blind ultraviolet (UV) detection is a core technology for applications such as environmental monitoring, flame detection, and remote early warning response. So far, there are still very few inorganic-organic hybrid perovskites (OIHPs) with the characteristic of the absorption edge in the solar-blind UV region. Herein, we present a high-performance solar-blind UV photodetector based on a two-dimensional (2D) OIHPs [C<sub>6</sub>N<sub>2</sub>H<sub>18</sub>][CdCl<sub>4</sub>], which exhibits a direct bandgap of 5.13 eV and an exceptional carrier lifetime of 504 μs. The device demonstrates a remarkable photocurrent of 152.1 nA/cm<sup>2</sup> and a rapid response time of 35 μs under 254 nm UV illumination. Compared to traditional inorganic detectors (e.g., Ga<sub>2</sub>O<sub>3</sub>, AlGaN), this hybrid material offers structural flexibility and low-temperature solution processability, addressing the trade-offs between sensitivity and mechanical robustness. Our work pioneers the use of ultrawide bandgap OIHPs for solar-blind UV sensing, providing a viable alternative to rigid inorganic semiconductors.
Authors
- Antony Joseph
- Xiren Miao (ORCID: https://orcid.org/0000-0003-2184-6403)
- Jingshan Hou (ORCID: https://orcid.org/0000-0001-7754-5162)
- Dezeng Li (ORCID: https://orcid.org/0000-0002-7727-5577)
- Yongzheng Fang (ORCID: https://orcid.org/0000-0002-3822-8364)
- Ganghua Zhang (ORCID: https://orcid.org/0000-0002-3603-6879)
- Li Ma (ORCID: https://orcid.org/0000-0001-8470-0378)
- Jinrong Wen
Institutions
- East China Normal University (CN)
- Shanghai Institute of Technology (CN)
Publication Details
- Journal
- Inorganic Chemistry
- Published
- 2025-10-28
- DOI
- https://doi.org/10.1021/acs.inorgchem.5c04247
- Primary Topic
- Perovskite Materials and Applications
- Type
- article
- Field-Weighted Citation Impact
- 0.00